Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Commitment and Contingencies [Line Items]
Face amount of debt	$ 19,100	$ 8,400
Estimate of possible loss	101
Loss contingency accrual	43
Indirect tax contingency	$ 50
Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Commitment and Contingencies [Line Items]
Concentration risk (percent)	16.20%
Brazil [Member] \| Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Commitment and Contingencies [Line Items]
Concentration risk (percent)	21.40%
Germany [Member] \| Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Commitment and Contingencies [Line Items]
Concentration risk (percent)	20.60%
Mexico [Member] \| Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Commitment and Contingencies [Line Items]
Concentration risk (percent)	12.50%
U.K. [Member] \| Geographic Concentration Risk [Member] \| Accounts Receivable [Member]
Commitment and Contingencies [Line Items]
Concentration risk (percent)	28.60%
Administrative Offices And Other [Member] \| Maximum [Member]
Commitment and Contingencies [Line Items]
Term of contract	10 years

[Line Items] for Commitment and Contingencies [Table]

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- Definition

Indirect Tax Contingency

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Amount of loss contingency liability.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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